Sony-TXDRE210-cd-sm维修电路原理图.pdf

MICROFILM TXD-RE210 AEP ModelSERVICE MANUAL COMPACT DISC CASSETTE DECK Model Name Using Similar MachanismNEW CDCD Machanism TypeCDM28-5BD23 SectionBase Unit NameBU-5BD23 Optical Pick-up TypeKSS-213B/S-N Tape deck Model Name Using Similar MachanismTXD-R11 SectionTape Transport Mechanism TypeTCM-190RB52C Dolby noise reduction manufactured under license from Dolby Laboratories Licensing Corporation. “DOLBY” and the double-D symbol a are trademarks of Dolby Laboratories Licensing Corporation. SPECIFICATIONS RadioFans.CN 收音机爱 好者资料库 2 TABLE OF CONTENTS Specifications . 1 1.SERVICING NOTE. 3 2.GENERAL Location and Function of Controls . 4 3.DISASSEMBLY 3-1. Front Panel Removal . 5 3-2. CD Mechanism Removal . 5 3-3. Mechanism Deck Removal. 6 4.ADJUSTMENTS 4-1. Mechanical Adjustments . 7 4-2. Electrical Adjustments. 7 5.EXPLANATION OF IC TERMINALS .11 6.DIAGRAMS 6-1. Printed Wiring Boards BD Section . 14 6-2. Schematic Diagram BD Section . 17 6-3. Schematic Diagram Main Section . 22 6-4. Printed Wiring Boards Main Section . 27 7.EXPLODED VIEWS 7-1. Chassis Section . 30 7-2. Panel Section . 31 7-3. Mechanism Section -1 . 32 7-4. Mechanism Section -2 . 33 7-5. CD Mechanism Section -1. 34 7-6. CD Mechanism Section -2. 35 8.ELECTRICAL PARTS LIST . 36 Laser component in this product is capable of emitting radiation exceeding the limit for Class 1. This appliance is classified as a CLASS 1 LASER product. The CLASS 1 LASER PRODUCT MARKING is lo- cated on the rear exterior. CAUTION Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous radiation ex- posure. This caution label is located inside the unit. SAFETY-RELATED COMPONENT WARNING! COMPONENTS IDENTIFIED BY MARK ! OR DOTTED LINE WITH MARK ! ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY. RadioFans.CN 收音机爱 好者资料库 3 SECTION 1 SERVICING NOTE NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK OR BASE UNIT The laser diode in the optical pick-up block may suffer electrostatic breakdown because of the potential difference generated by the charged electrostatic load, etc. on clothing and the human body. During repair, pay attention to electrostatic breakdown and also use the procedure in the printed matter which is included in the repair parts. The flexible board is easily damaged and should be handled with care. NOTES ON LASER DIODE EMISSION CHECK The laser beam on this model is concentrated so as to be focused on the disc reflective surface by the objective lens in the optical pick- up block. Therefore, when checking the laser diode emission, ob- serve more than 30 cm away from the objective lens. CHUCK PLATE JIG ON REPAIRING On repairing CD section, playing a disc without the CD lid, use Chuck Plate Jig. r Code number of Chuck Plate Jig : X-4918-255-1 r Disc table getting out procedure on the power supply is OFF. 1 2 Disc table 3 4 SECTION 2 GENERAL LOCATION AND FUNCTION OF CONTROLS 3249! ! CD operating buttons ) button 0button button p(stop) button P(pause) button ! RESET button ! DISPLAY button ! TIME button ! EDIT/TIME FADE button CREAR button CHECK button PHONES jack PHONE LEVEL control 1 POWER switch 2 Disc tray 3 PLAY MODE button 4 OPEN/CLOSE button 5 REPEAT button 6 CD SYNCHRO button 7 FADER button 8 ARL button 9 Cassette deck ! REC LEVEL control/AUTO indicator ! DOLBY NR switch ! DIRection MODE switch ! Eject button ! Tape operating buttons rREC button RREC MUTE button 0, )buttons , buttons p(stop) button P(pause) button 56 7 81 ! ! ! ! This section is extracted from instruction manual. 5 Note : Follow the disassembly procedure in the numerical order given. 1 2 Disc table Loading panel Chassis Front panel assy 6Wire (Flat type) (7 core) to Main board (CN806) 7Wire (Flat type) (23 core) to Main board (CN805) 8Wire (Flat type) (7 core) to Main board (CN801) 9Wire (Flat type) (9 core) to Main board (CN804) 5 Screw (+BV TP 3 x 6) 5 Three Screws (+BV TP 3 x 6) 4 3 Chassis CD Mechanism 1 Four Screws (+BV TP 3 x 6) 2 SN802 (6P) 3 3-1. FRONT PANEL REMOVAL 3-2. CD MECHANISM REMOVAL SECTION 3 DISASSEMBLY 6 Mechanism deck 3 Two Screws (+BV TP 2.6 x 8) 4 1 Press button 2 3 Two Screws (+BV TP 2.6 x 8) Front panel assy Casstte lid assy 3-3. MECHANISM DECK REMOVAL 7 SECTION 4 ADJUSTMENTS 4-1. MECHANICAL ADJUSTMENTS PRECAUTION 1. Clean the following parts with a denatured-alcohol-moistened swab : record/playback headpinch roller erase headrubber belts capstan 2. Demagnetize the record/playback head with a head demagne- tizer. 3. Do not use a magnetized screwdriver for the adjustments. 4. After the adjustments, apply suitable locking compound to the parts adjusted. 5. The adjustments should be performed with the rated power sup- ply voltage unless otherwise noted. r Torque Measurement ModeTorque MeterMeter Reading ForwardCQ-102C 30 to 65 gcm (0.42 0.9 ozinch) ForwardCQ-102C1 to 7 gcm Back Tension(0.0134 0.097 ozinch) ReverseCQ-102RC 30 to 65 gcm (0.41 0.9 ozinch) ReverseCQ-102RC1 to 7 gcm Back Tension(0.0134 0.097 ozinch) FF, REWCQ-201B 70 to 120 gcm (0.972 1.66 ozinch) 4-2. ELECTRICAL ADJUSTMENTS 1. The adjustment should be performed in the publication. (Be sure to make playback adjustment at first.) 2. The adjustment and measurement should be performed for both L-CH and R-CH. rSwitch position DOLBY NR switch: OFF DIR MODE switch:A r Standard record position : Deliver the standard input signal level to input jack and set the REC LEVEL control to obtain the standard output signal level as follows. Record Mode set TAPE OUT + TAPE IN AF OSC attenuator 600 10 k 47 k level meter r Standard Input Level Input TerminalTAPE IN source impedance10k input signal level0.5V (3.8dB) r Standard Output Level Output TerminalTAPE OUT load impedance47k output signal level0.5V (3.8dB) r Test tape TapeContentsUse P-4-A10010 kHz,10dB Azimuth Adjustment P-4-L300315Hz,0dBPB Level Adjustment WS-48B3kHz,0dBTape Speed Adjustment 0dB=0.775V TC Test Mode setting :Push POWER button with STOP key and REC MUTE key. function :r when start recording, COUNTER is set to “0000” and COUNTER MEMORY function is effective (“MEMORY” appears on FLD). r While playing or AMS, the signal level is displayed. (“L” / “H”) r Test tape TapeContentsUse P-4-A10010 kHz,10dBHead Azimuth Adjustment P-4-L300315Hz,0dBLevel Adjustment WS-48B3kHz,0dBTape Speed Adjustment 0dB=0.775V Record/Playback Head Azimuth Adjustment r Carrey out servicing or repairs form the REVERSE direction first. Procedure : 1. Mode : Forward playback set level meter + test tape P-4A100 (10kHz, 10dB) 47 k TAPE OUT 2. Turn the adjustment screw for the maximum output levels. If these levels do not match, turn the adjustment screw until both of output levels match together within 1dB. L-CH peak R-CH peak L-CH peak R-CH peak Screw position output level within 1 dB within 1 dB screw angle 8 Sample Value of Wow and flutter W. RMS (JIS) within 0.3% (test tape : WS-48B) Playback Level Adjustment Procedure : Mode : Playback set level meter + test tape P-4-L300 (315Hz, 0dB) 47 k TAPE OUT Adjust RV11 (L-CH) and RV21 (R-CH) so the level meter reading becomes the adjustment limits below. Adjustment Level : TAPE OUT level : 7.7 0.5dB (0.301 to 0.338V) Level Difference between Channels : within 0.5dB Confirm the TAPE OUT level does not change in playback mode while changing the mode from playback to stop several times. Adjustment Location : AUDIO board. (see page 9) Record Bias Adjustment Procedure : 1. Mode : Record set AF OSC attenuator blank tape CS-123 600 10 k 1) 315Hz 2) 10kHz 72.3mV (20.6dB) TAPE IN 2. Mode : Playback set level meter + recorded portion 47 k TAPE OUT 3. Confirm playback the signal recorded in step 1 become adjust- ment level as follows. 4. If these levels do not adjustment level, adjust the RV12 (L-CH) and RV22 (R-CH) to repeat step 1 and 4. Adjustment level : Playback output of 315Hz to playback output of 10kHz : 0.5dB. Adjustment Location : AUDIO board. 3. Playback Mode VH in phase 45 90 135 180 goodwrong set L-CH R-CH screen pattern test tape P-4A100 (10kHz, 10dB) Osilloscope TAPE OUT 47 k 47 k 4. Change the reverse playback mode and repeat the steps 1 to 3. 5. After the adjustment, lock the adjustment screw with suitable locking compound. Adjustment Location : record/playback head forward side adjustment screws revers side Tape Speed Adjustment Procedure : Mode : Playback + set frequency counter test tape WS-48B (3kHz, 0dB) 47 k TAPE OUT 1.Set to forward playback mode. 2.Adjust RV71 so that frequency reading becomes 3,000 90Hz. Frequency difference between the beginning and the end of the tape should be within 3%. Adjustment Location : AUDIO board. (see page 9) 9 Record Level Adjustment Procedure : 1. Mode : Record set AF OSC attenuator blank tape CS-123 600 10 k 315Hz 72.3mV (20.6dB) TAPE IN 2. Mode : Playback set level meter + recorded portion 47 k TAPE OUT 3. Confirm playback the signal recorded in step 1 become adjust- ment level as follows. 4. If these levels do not adjustment level, adjust the RV111 (L-CH) and RV211 (R-CH) to repeat step 1 and 4. Adjustment Level : TAPE OUT level : 26 0.5dB (36.7 to 41.1mV) Adjustment Location : MAIN board. AUDIO BOARD (Conductor side) Record Bias (R)(L) RV22 RV12 RV71 (NORMAL) Tape speed RV21(R) RV11(L) Playback Level MAIN BOARD (Component side) RV111 : Record level (L-CH) RV211 : Record level (R-CH) CD SECTION Note : 1. CD Block basically constructed to operate without adjustment. Therefore, check each item in order given. 2. Use YEDS-18 disc (3-702-101-01) unless otherwise indicated. 3. Use the oscilloscope with more than 10M impedance. 4. Clean an object lens by an applicator with neutral detergent when the signal level is low than specified value with the following checks. S-Curve Check + BD board TP (FE) TP (VC) oscilloscope Procedure : 1. Connect oscilloscope to test point TP(FE) and BD board. 2. Connect between test point TP (FEI) and TP (VC) by lead wire. 3. Turned Power switch on. 4. Put disc (YEDS-18) in and turned Power switch on again and actuate the focus search. (Actuate the focus search when disc table is moving in and out.) 5. Check the oscilloscope waveform (S-curve) is symmetrical be- tween A and B. And confirm peak to peak level within 3 1Vp-p. A B within 3 1Vp-p symmetry 6. After check, remove the lead wire connected in step 2. Note : rTry to measure several times to make sure that the ratio of A : B or B : A is more than 10 : 7. rTake sweep time as long as possible and light up the bright- ness to obtain best waveform. RF Level Check + BD board TP (RF) TP (VC) oscilloscope Procedure : 1. Connect oscilloscope to test point TP (RF) on BD board. 2. Turned Power switch on. 3. Put disc (YEDS-18) in and playback. 4. Confirm that oscilloscope waveform is clear and check RF sig- nal level is correct or not. Note : Clear RF signal waveform means that the shape “ ” can be clearly distinguished at the center of the waveform. level : 1.2 Vp-p +0.25 0.20 VOLT/DIV : 200mV TIME/DIV : 500nS RF signal waveform 10 E-F Balance (1 Track Jump) Check + BD board TP (TE) TP (VC) oscilloscope (DC range) Procedure : 1. Connect oscilloscope to test point TP(TE) on BD board. 2. Turned Power switch on. 3. Put disc (YEDS-18) in to play the number five track. 4. Press the “P (Pause)” button. (Becomes the 1 track jump mode) 5. Check the level B of the oscilloscopes waveform and the A (DC voltage) of the center of the Traverse waveform. Confirm the following : A/B x 100 = less than 22% 0V Center of the waveform A (DC voltage) level : 1.3 0.6 Vp-p 1 track jump waveform symmetry B RF PLL Free-run Frequency Check Procedure : 1. Connect frequency counter to test point (PLCK) with lead wire. + frequency counter BD board TP (PLCK) 2. Turned Power switch on. 3. Put disc (YEDS-18) in to play the number five track. Confirm that reading on frequency counter is 4.3218MHz. Adjustment Location : 1510 111520 151014 28252015 BD BOARD (Side B) TEFE RF VC PLCK TEI 11 IC801 PD78044FGF029-3B9 (SYSTEM CONTROL) SECTION 5 EXPLANATION OF IC TERMINALS Pin No.Pin nameI/ODescription 1LEDOAUTO REC LEVEL LED ON/OFF. 271G 6GOFL grid drive. 8VDDPower supply (+5V) 9CLKOCommand clock output for IC101 and IC104. 10DATAOCommand data output for IC101 and IC104. 11SENSISENS input for IC101 and IC104. 12PGMLOCommand latch output for IC104. 13AMUTEOMute control output. 14SQCLKOQ-data read-out for clock output. 15NCONot used (Open). 16SUBQIQ-data input. 17RESETISystem reset input. 18METALIMetal tape detect input. 19TC TESTITC test mode input. “L” : Test mode. 20AVSSA/D ground terminal. 21LD INOCD loading-in output. 22LD OUTOCD loading-out output. 23AD CTRL1OA/D extended input (1) select signal output. 24AD CTRL0OA/D extended input (0) select signal output. 25AD1IA/D extended input (1). 26AD0IA/D extended input (0). 27S. REELISupply reel pulse input. 28CD TESTICD test mode input. 29AVDDA/D analog power supply. 30AVREFIA/D reference voltage input. 31STOP SWISTOP switch input. 32XT2Not used (Open). 33VSSGround terminal. 34X1ISystem clock. (4MHz) 35X2OSystem clock. (4MHz) 36NR1ODolby mode select output (1). 37NR0ODolby mode select output (2). 38BS/AMSOBlank skip/AMS select output. 39RELAYOREC/PLAY select output. 40XLTOCommand lucth output. 41REELOReel motor control output. 42REEL+OReel motor control output. 43VOL OUTOElectrical volume control. 44REC MUTEOREC mute ON/OFF control. 45POWER OUTOPower switch control. 46SCORIQ-data sync input. 47SIRCS INIRemote control signal input. 48VSS (IC)Ground terminal. 49AMS INIAMS signal input. 50POWER INIPower OFF detect input. 12 Pin No.Pin nameI/ODescription 51LD ONOLaser diode ON output. 52VDDPower supply (+5V). 53HP SELOHeadphone output selection. 54INPUT SELORecording source select. 55TC LINE MUTEOTC line mute control output. 5670S1S15OFL segment output. 71VDISPPower supply for FL. 7277S16S21OFL segment output. 78BIASOBias ON/OFF output. 79PB/RECOPB/REC select output for D